Okay, fine -- technically, summer is over (and winter is coming!). But The Night's Cast still has one more history class to teach, so settle in for the last time this semester! This week, Vanessa, Petra and Samantha wrap up their guest teaching slots at the Citadel by covering the basics of the Long Night (in case you need a refresher) and some of the mysterious civilizations of Essos -- one or more of which will figure into the still-tentatively-titled prequel in the works, Blood Moon.